Instruction Manual LeCroy CP500 · Earth ground Probe is protected by reinforced or double insulation. CP500 Current Probe 1-2 ISSUED: November 2001 CP500-OM-E Rev A USAGE The probe

Instruction Manual

LeCroy CP500

REVISION A– November 2001

LeCroy Corporation700 Chestnut Ridge RoadChestnut Ridge, NY 10977-6499Tel: (845) 578-6020, Fax: (845) 578-5985

Internet: www.lecroy.com

Warranty

LeCroy warrants this oscilloscope accessory for normal use and operation within specification for a period of one year from the date of shipment. Spare parts, replacement parts and repairs are warranted for 90 days.

In exercising its warranty, LeCroy, at its option, will either repair or replace any assembly returned within its warranty period to the Customer Service Department or an authorized ser-vice center. However, this will be done only if the product is determined by LeCroy’s examina-tion to be defective due to workmanship or materials, and the defect is not caused by misuse, neglect, accident, abnormal conditions of operation, or damage resulting from attempted repair or modifications by a non-authorized service facility.

The customer will be responsible for the transportation and insurance charges for the return of products to the service facility. LeCroy will return all products under warranty with transporta-tion charges prepaid

This warranty replaces all other warranties, expressed or implied, including but not limited to any implied warranty of merchantability, fitness or adequacy for any particular purposes or use. LeCroy shall not be liable for any special, incidental, or consequential damages, whether in contract or otherwise.

Copyright 2001, LeCroy Corporation. All rights reserved. Contents of this publication may not reproduced in any form without permission of LeCroy Corporation.

LeCroy, SMART Trigger, and ProBus are registered trademarks of LeCroy Corporation. All other marks are the property of their respective owners.

CP500-OM-E Rev A 1101

CP500-OM-E Rev A ISSUED: November 2001 iii

DECLARATION OF CONFORMITYaccording to ISO/IEC Guide 22 and EN 45014:1998

Manufacturer’s Name: LeCroy CorporationManufacturer’s Address: 700 Chestnut Ridge Road

Chestnut Ridge, NY 10977USA

herewith declare that

Product(s) Name: Current probeModel Number(s): CP500

including all their options are in conformity with the provisions of the following EC directive(s), including the latest amendments, and with national legislation implementing these directives:

73/23/EEC Low Voltage Directive

89/336/EEC EMC Directive

and that conformity with Council Directive 73/23/EEC is based on:

EN 61010-1:1993: Safety requirements for electrical equipment for measurementcontrol and laboratory usePart 1: General requirements

EN 61010-2-031:1994: Part 2-031: Particular requirements for hand-held probeassemblies for electrical measurement and test

EN 61010-2-032:1995: Part 2-032: Particular requirements for hand-held current clampsfor electrical measurement and test

and that conformity with Council Directive 89/336/EEC is based on:

EN 61326-1: 1997 +A1:1998: EMC requirements for electrical equipment for measurement control and laboratory use

Emissions: EN 55011:1998+A1:1999 Radiated Emissions

Immunity: EN 61000-4-2:1995+A1:1998 Electrostatic DischargeEN 61000-4-3:1996+A1:1998 RF Radiated EM FieldEN 61000-4-4:1995 Electrical Fast Transient/Burst

European Contact: Your local LeCroy Sales Office or

By: R. Kalyandrug LeCroy Europe GmbHProduct Compliance Manager Waldhofer Str. 104

D-69123 HeidelbergPlace: LeCroy Corporation Germany

700 Chestnut Ridge RoadChestnut Ridge, NY 10977 Tel: (49) 6221 82700USA Fax: (49) 6221 834655

Date: October 22, 2001

iv ISSUED: November 2001 CP500-OM-E Rev A

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CP500-OM-E Rev A ISSUED: November 2001 v

Table of Contents

Safety Information ........................................................................................... 1-1OPERATOR SAFETY ................................................................................................... 1-1OPERATING ENVIRONMENT ..................................................................................... 1-1SAFETY SYMBOLS ..................................................................................................... 1-1USAGE ......................................................................................................................... 1-2

Overview .......................................................................................................... 2-1DESCRIPTION ............................................................................................................. 2-1KEY FEATURES .......................................................................................................... 2-1CONVENTIONS USED IN THIS MANUAL ................................................................... 2-1ACCESSORIES ............................................................................................................ 2-2

Operation .........................................................................................................3-1PRECAUTIONS ............................................................................................................ 3-1CONNECTING THE PROBE TO THE TEST INSTRUMENT ....................................... 3-1CONNECTING THE PROBE TO THE TEST CIRCUIT ................................................ 3-1OPERATION WITH A LECROY OSCILLOSCOPE ...................................................... 3-2AC COUPLING ............................................................................................................. 3-3AUTO ZERO ................................................................................................................. 3-3DEGAUSSING PROBE ................................................................................................ 3-4INSERTION IMPEDANCE ............................................................................................ 3-4

Care and Maintenance .................................................................................... 4-1CLEANING ................................................................................................................... 4-1CLEANING CORE SURFACES ................................................................................... 4-1CALIBRATION INTERVAL ........................................................................................... 4-1SERVICE STRATEGY .................................................................................................. 4-1TROUBLESHOOTING .................................................................................................. 4-2RETURNING A PROBE ............................................................................................... 4-2RETURNING A PROBE TO A DIFFERENT COUNTRY .............................................. 4-3

Performance Verification ................................................................................5-1TEST EQUIPMENT REQUIRED .................................................................................. 5-1PRELIMINARY PROCEDURE ..................................................................................... 5-2FUNCTIONAL CHECK ................................................................................................. 5-2PERFORMANCE VERIFICATION PROCEDURE ........................................................ 5-3CHECK DC ACCURACY .............................................................................................. 5-3

vi ISSUED: November 2001 CP500-OM-E Rev A

Specifications ..................................................................................................6-1NOMINAL CHARACTERISTICS .................................................................................. 6-1WARRANTED CHARACTERISTICS ............................................................................ 6-1TYPICAL CHARACTERISTICS .................................................................................... 6-1ENVIRONMENTAL CHARACTERISTICS .................................................................... 6-2PHYSICAL CHARACTERISTICS ................................................................................. 6-2COMPLIANCES AND CERTIFICATIONS .................................................................... 6-3

Appendix A ...................................................................................................... 1-1PERFORMANCE VERIFICATION TEST RECORD ..................................................... 1-1EQUIPMENT USED: .................................................................................................... 1-1CP500 TEST RECORD ................................................................................................ 1-2

Safety Information

CP500-OM-E Rev A ISSUED: November 2001 1-1

1Safety Information

OPERATOR SAFETY

To avoid personal injury and to prevent damage to the probe or any products connected to it, review the following safety precautions.

OPERATING ENVIRONMENT

Before using this probe, ensure that its operating environment will be maintained within these parameters:

Operation In-door UseTemperature 0 to 40 °C (32 to 104 °F)Humidity ≤80% RH (non-condensing)

SAFETY SYMBOLS

Whenever the following safety symbols appear in the instruction manual or on the probe, they alert the user to an aspect of safety.

Symbol Meaning

Refer to accompanying documents (for safety related information)

CAUTIONCalls attention to a procedure, practice or condition that could possibly cause damage to equipment

WARNINGCalls attention to a procedure, practice or condition that could possibly cause bodily injury or death

Risk of electrical shock

Earth ground

Probe is protected by reinforced or double insulation

CP500 Current Probe

1-2 ISSUED: November 2001 CP500-OM-E Rev A

USAGE

The probe is intended to be used only with instruments that are connected to earth ground through the input connector. The probe is not intended to be used in wet or explosive atmospheres.

The use of the probe and/or the instrument it is connected to in a manner other than that specified may impair the safety mechanisms.

In order to assure safe operation and to obtain maximum performance from the unit, observe the following:

1. To avoid short circuits and accidents that could result in injury or death, use the CP500 current probe only with conductors carrying 600 V (CAT II) or 300 V (CAT III) or less.

2. In order to prevent short circuits and electric shock when con-ductors being measured carry less than 600 V (CAT II) or 300 V (CAT III) but more than the safe voltage level (SELV-E) make sure that the conductors to be measured are insulated with material conforming to:

• Overvoltage Category III Basic insulation requirement for working voltage of 300 V.

• Pollution degree 23. Never install or remove the probe on bare conductors which

are energized. The transformer core and shield are grounded but not insulated and may contact the conductor when the locking lever is open.

4. Be careful not to damage the insulation surface when making measurements.

5. Do not use the probe if any part is damaged. All maintenance should be referred to qualified service personnel.

To guarantee accurate performance characteristics, mechanical shock should be avoided, as well as damage to the cable through excessive bending. The probe case is not sealed and should never be immersed in any fluid. Do not exceed the maximum specified current/voltage levels. (See Specifications).

###

CAUTION

WARNING

CAUTION

Overview


2Overview

DESCRIPTION

The CP500 uses a combination of Hall effect and transformer technology which enables measurements to be made on DC, AC and impulse currents. It has a 2 MHz bandwidth and is designed to measure continuous currents up to 500 Amp.

The probe can be used with a Waverunner™, WavePro™ or LC series oscilloscope with firmware 9.1.0 or higher. With the ProBus interface, the CP500 becomes an integral part of the oscilloscope. The bandwidth limit, auto zero and degauss functions are all controlled from the oscilloscope’s front panel. The oscilloscope provides power to the probe, so no external power supply is needed.

KEY FEATURES• Highly accurate current measurements• Easy current measurements• Large opening for high current measurements• Compact• Over-current protected

CONVENTIONS USED IN THIS MANUAL

The following conventions may appear in this manual:

Note

A Note contains information relating to the use of theproduct.

CAUTION

A Caution contains information that should be followed toavoid possible damage to the instrument or the deviceunder test.

WARNING

A Warning alerts you to a potential hazard. Failure toadhere to the statement in a WARNING message couldresult in personal injury.

CP500 Current Probe


The following symbols may appear on the product:

This refers you to additional information contained in this manual. The corresponding information in the manual is similarly denoted.

This is the symbol for earth ground.

ACCESSORIES

Certificate of Calibration

Instruction Manual. CP500-OM-E

###

CAUTION: Refer toaccompanying documents

Operation


3Operation

PRECAUTIONSNote

The sensor head is a precision assembly consisting of amolded component with a ferrite core and a Hall effectelement. It may be damaged if subjected to suddenchanges in temperature, mechanical strain or shock.

The mating surfaces of the sensor are precision groundand should be treated with care. If there is any type ofdust or dirt on the mating surfaces of the sensor head,measurements may be impaired.

Note

Accurate measurements may not be possible in locationssubject to strong magnetic fields such as transformersand high-current conductors, or in locations subject tostrong external electric fields.

CONNECTING THE PROBE TO THE TEST INSTRUMENT

The CP500 probe has been designed for use with the Waverunner™, WavePro™ and LC series LeCroy oscilloscopes equipped with the ProBus interface. Attach the probe output connector to the oscilloscope input connector. The oscilloscope will recognize the probe, set the oscilloscope input termination to 1 MΩ and activate the probe control functions in the user interface.

CONNECTING THE PROBE TO THE TEST CIRCUIT

The CP500 has been designed with a movable split core, eliminating the need to break the conductor for the core to slip around the conductor.

To connect:

1. Pull the locking lever towards the cable so that the clamp opens.

2. Align the sensor so that the current direction indicator corre-sponds to the direction of current flow in the conductor.

CP500 Current Probe


3. Press the probe jaws together around the conductor until the jaws click shut.

4. Slide the locking lever on the sensor head towards the front of the probe until the "UNLOCK” indication disappears and the "LOCK" indication appears.

Note

Never use this probe on bare conductors. The core andshield are grounded and any voltage applied to the con-ductor may cause damage the probe or the circuit undertest.

OPERATION WITH A LECROY OSCILLOSCOPE

Note

Proper operation of the CP500 requires software version9.1.0 or higher. Attaching the probe to an oscilloscopewith older software may give unreliable operation, includ-ing lock up of the oscilloscope. Should this occur, removethe probe and turn the oscilloscope power OFF and ON.The verify the software version by pressing SCOPE STA-TUS and selecting the SYSTEM menu choice. Softwareupgrades for most LeCroy oscilloscopes can be obtainedfree of charge. Contact your LeCroy sales representativefor more information.

Control through the oscilloscope user interface can be found in the Coupling menu of the channel to which the probe is connected.

Turning the VOLTS/DIV knob will control the oscilloscope’s scale factor to give full dynamic range. The minimum and maximum sensitivities depend on the oscilloscope being used.

Figure 3-1 shows the oscilloscope user interface menu for a CP500 probe.

The menu allows for the selection of the probe’s coupling (DC, Grounded or AC) in the COUPLING menu, DEGAUSS PROBE and AUTO ZERO functions.

Operation


Fig. 3-1. Oscilloscope display with menu

AC COUPLING

DC, Ground or AC coupling can be selected through the Coupling menu. AC coupling occurs at the input of the oscilloscope and not at the probe input. When using the CP500 in the AC coupling mode and measuring AC signals with a DC component, care must be taken to assure that the dynamic range of the probe will not be exceeded. There will be no warning if the dynamic range is exceeded. If clipping of the waveform occurs, check to see if the operating range of the probe has been exceeded. This can be done by changing the coupling back to DC and setting the scale factor to the maximum Amp/Div.

AUTO ZERO

The CP500 incorporates an Auto Zero function to remove the DC offset from the current probe. Auto Zero must be invoked by the user. After several minutes of warm-up, or when the probe is exposed to a large shift in ambient temperature, some DC offset

Probe Sensitivity

Highlighted number indi-cates selected channel, oscilloscope input sensi-tivity and coupling

ProbeAttenuation

CP500 Current Probe


drift may occur. To initiate an Auto Zero cycle press the button next to AUTO ZERO menu in the oscilloscope’s user interface. Auto Zero must be performed without any current passing thought the test conductor and with a correctly closed probe head.

DEGAUSSING PROBE

If the probe has been magnetized by external magnetic field or by prolonged exposure to non-symmetrical pulsed currents resulting in a DC offset, the core can be demagnetized by pressing the button next to DEGAUSS PROBE menu in the user interface.

Prior to use, the CP500 probe should be degaussed to eliminate any residual magnetization from the probe core. Residual magnetism in the core is a major cause of measurement errors when used at high sensitivities.

The demagnetizing process takes about 5 seconds and shouldalways be performed before taking a measurement.

Without clamping the probe around a conductor, slide the opening lever to close and lock the probe and press the button next to DEGAUSS PROBE menu twice

An Auto Zero is automatically performed as part of the degauss cycle.

Note

Never install or remove the probe on bare conductorswhich are energized. The transformer core and shield aregrounded but not insulated and may contact the conduc-tor when the locking lever is open.

Degauss the probe in any of these cases:

• After turning on the oscilloscope and probe• After connecting the probe to the oscilloscope• Before connecting the probe to the circuit under test• Whenever an overload conditions occurred• Whenever the probe is subjected to strong magnetic fields

INSERTION IMPEDANCE

Connecting a current probe to a circuit under test may alter the characteristics of this circuit because of the impedance represented by the current probe.

Operation


In the case of an AC current probe, or open loop AC/DC current probe, two elements are added: the leakage inductance and magnetizing inductance shunted with a small resistance. Refer to Figure 3-2 A

Figure 3-2. Insertion Impedance

In a closed loop AC/DC current probe, the magnetizing inductance term drops out because the bucking coil prevents the core from being magnetized. Figure 3-2 B.

In addition to the impedance resulting from probe insertion, any loop wire added to the conductor to gain access to the conductor will increase the total impedance of the conductor.

###

Leakage Magnetizing LeakageInductance

MagnetizingInductance

A

InductanceInductance

B

AC Probe Precision AC/DC Probe

CP500 Current Probe


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Care and Maintenance


4Care and Maintenance

CLEANING

The exterior of the probe and cable should be cleaned only using a soft cloth moistened with water or isopropyl alcohol. The use of abrasive agent, strong detergents or other solvents may damage the probe.

CAUTION

The probe case is not sealed and should never beimmersed in any fluid.

CLEANING CORE SURFACES

To clean the transformer core surfaces, open the locking lever and clean the exposed core surfaces with a cotton swab dampened with isopropyl or ethyl alcohol.

In no case should the core surfaces be lubricated. Any lubrication between the mating surfaces will degrade the performance of the current probe should be removed with isopropyl or ethyl alcohol.

CALIBRATION INTERVAL

The recommended calibration interval is one year. Adjustment should only be performed by qualified personnel. (A Performance Verification procedure is included in this manual.)

SERVICE STRATEGY

Defective probes must be returned to a LeCroy service facility for diagnosis and exchange. A defective probe under warranty will be replaced with a factory refurbished probe. A probe that is not under warranty can be exchanged for a factory refurbished probe. A modest fee is charged for this service. A defective probe must be returned in order to receive credit for the probe core.

Calibration adjustments require the use of specialized signal sources which are not commercially available. Probes which do not pass the performance verification must be returned to the factory for service.

CP500 Current Probe


TROUBLESHOOTING

If the probe is not operating properly the problem may be the way in which it is used. Before assuming the probe is defective, perform the following troubleshooting procedures:

1. Verify using on a LT or LC series LeCroy oscilloscope with firmware 9.1.0 or higher. (Firmware version of your oscillo-scope can be verified by pushing SCOPE STATUS and then selecting System menu option.)

2. Waveform is inverted — Make sure the arrow on the core clamp is in the direction of the current flow.

3. If the displayed signal shows a high offset — The probe lock-ing lever may not be fully closed and locked or the probe may need to be degaussed.

4. Attenuated signals or poor frequency response may be caused by contaminated core surfaces or the probe locking lever may not be fully closed and locked.

5. No signal — Make sure the locking lever is closed and locked and verify that the ProBus connector is fully engaged

RETURNING A PROBE

The procedure for returning a probe for calibration or service is as follows:

Contact your local LeCroy sales representative to find out where to return the product. All returned products should be identified by model number and serial number. Provide your name and contact number and if possible describe the defect or failure. In case of products returned to the factory, a Return Authorization Number (RAN) should be used. The RAN can be established by contacting your nearest LeCroy sales office, representative, or the North America Customer Care Center.

Return shipment should be prepaid. LeCroy cannot accept COD or Collect Return shipments. We recommend air-freighting. It is important that the RAN be clearly shown on the outside of the shipping package for prompt redirection to the appropriate department.

1. Contact your local LeCroy sales or service representative to obtain a Return Authorization Number.

2. Remove all accessories from the probe. Do not include the manual.

Care and Maintenance


3. Pack the probe in its case, surrounded by the original packing material (or equivalent) and box.

4. Label the case with a tag containing:

• The RAN

• Name and address of the owner

• Probe model and serial number

• Description of failure

5. Package the probe case in a cardboard shipping box with adequate padding to avoid damage in transit.

6. Mark the outside of the box with the shipping address given to you by the LeCroy representative; be sure to add the fol-lowing:

• ATTN: <RAN assigned by the LeCroy representative>

• FRAGILE

7. Insure the item for the replacement cost of the probe.

8. Ship the package to the appropriate address.

RETURNING A PROBE TO A DIFFERENT COUNTRY

In order to avoid customs duty for purchase price of a new probe, when your probe is returned for service, please use the following procedure.

In addition to the items mentioned above in ‘Returning a Probe’, you’ll need to mark shipments returned for service as a ‘Return of US goods for warranty repair/recalibration’. If there is a cost involved in the service, put the cost of the service in the value column and the original value of the product at time of purchase in the body of the invoice marked ‘For insurance purposes only’. Be very specific as to the reason for shipment.

Duties may have to be paid on the value of the service.

####

CP500 Current Probe


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Performance Verification


5Performance VerificationThis procedure can be used to verify the warranted characteristics of the CP500 Current Probe.

The recommended calibration interval for the model CP500 Current Probe is one year. The complete performance verification procedure should be performed as the first step of annual calibration. Test results can be recorded on a photocopy of the Test Record provided at the end of the manual.

Performance verification can be completed without removing the probe covers or exposing the user to hazardous voltages.

Calibration adjustments require the use of specialized signal sources which are not commercially available. Probes which do not pass the performance verification must be returned to the factory for service.

Adjustment should only be performed by qualified personnel.

TEST EQUIPMENT REQUIRED

The following table lists the test equipment and accessories (or their equivalents) which are required for performance verification of the CP500 Current Probe.

Because the input and output connector types may vary on different brands and models of test instruments, additional adapters or cables may be required.

Table 5-1. List of Required Equipment

Description Minimum Requirements Test Equipment Examples

Oscilloscope Any oscilloscope equipped with ProBus interface with software ver-sion 9.1.0 or higher

LeCroy LT322

Digital Multimeter(2 required)

DC: 0.1% Accuracy5½ digit resolution

Agilent Technologies 34401A orFluke 8842A-09

Function Generator 50 Hz sine wave output. 3 Vrms into 50Ω

Agilent Technologies 33120A orStanford Research Model DS340

Calibration Fixture, 500 turn Loop

500 turn loop in series with 0.5Ω ± 0.1% resistor with sense termi-nals.

LeCroy CP150-CF02

CP500 Current Probe


PRELIMINARY PROCEDURE1. Connect the CP500 to the channel 1 input of the oscilloscope

and completely close the probe locking lever.

2. Turn the oscilloscope on and allow at least 30 minutes warm-up time for the CP500 and test equipment before performing the Verification Procedure.

3. Turn on the other test equipment and allow these to warm up for the time recommended by the manufacturer.

4. While the instruments are reaching operating temperature, make a photocopy of the Performance Verification Test Record (located in Appendix A), and fill in the necessary data.

FUNCTIONAL CHECK

The functional check will verify the basic operation of the probe functions.

It is recommended that the Functional Check be performed prior to the Performance Verification Procedure.

1. Select Channel 1 and enter the Coupling menu and verify that the probe BWL is set to OFF.

2. Verify that Probe sensed (CP500) is displayed on the right hand menu.

3. Degauss the probe by pressing the DEGAUSS button, (located in the coupling menu), twice.

4. Verify that "Performing Degauss and Auto Zero on CP500 probe...." is displayed at the top of the screen and no error message remains displayed.

5. Lock the probe by pushing the locking slider fully towards the probe head.

Calibration Fixture ProBus Extension Cable LeCroy PROBUS-CF01

Banana Plug Adapter Female BNC to Dual Banana Plug Pomona 1269

Patch Cables (4 required) Male Banana to Male Banana, 12" Pomona B-12-0 (black), B-12-2 (red)

BNC Adapter BNC Male to Dual Banana Jack Pomona 1296

Description Minimum Requirements Test Equipment Examples



6. Verify that the message disappears.

7. Degauss the probe by pressing the DEGAUSS button, (located in the Coupling menu), twice.

8. Verify that “Degaussing CP500 probe...” is displayed at the top of the screen and no error message remains displayed.

PERFORMANCE VERIFICATION PROCEDURE

The warranted characteristics of the CP500 Current Probe are valid at any temperature within the Environmental Characteristics listed in the Specifications. However, some of the other test equipment used to verify the performance may have environmental limitations required to meet the accuracy needed for the procedure. Make sure that the ambient conditions meet the requirements of all the test instruments used in his procedure.

Note

The correct operation of the CP500 controls requiressoftware version 9.1.0 or higher. The software version inthe test oscilloscope can be verified by pushing SCOPESTATUS, then selecting the System menu option. Con-tact your local LeCroy representative if the software inyour oscilloscope requires updating.

CHECK DC ACCURACY

1. Set the Function generator to 50 Hz sine wave. Output volt-age at 3 Vrms with 50Ω output.

2. Remove the CP500 from the oscilloscope and reconnect using the ProBus extension cable. Connect the BNC male connector of the ProBus extension to DMM #1 using a BNC Female to Dual Banana adapter. Refer to figure 5-1.

3. Using Banana Patch cords and the BNC to Dual Banana Plug adapter, connect the ’V Source’ and ’V Return’ terminals of the 500 turn Calibration Loop to the output of the Function Generator.

4. Connect the Current Sense terminals of the 500 turn Calibra-tion Loop to the voltage inputs of DMM #2.

5. Set both DMMs to measure AC Volt.

6. Remove the CP500 from the oscilloscope and reconnect using the ProBus extension cable. Connect the BNC male

CP500 Current Probe


connector of the ProBus extension to DMM #1 using a BNC Female to Dual Banana adapter.

7. Remove the CP500 from the oscilloscope and reconnect using the ProBus extension cable. Connect the BNC male connector of the ProBus extension to DMM #1 using a BNC Female to Dual Banana adapter.

Figure 5-1. DC Accuracy Test Set Up

8. Using Banana Patch cords and the BNC to Dual Banana Plug adapter, connect the ’V Source’ and ’V Return’ terminals of the 500 turn Calibration Loop to the output of the Function Generator.

9. Connect the Current Sense terminals of the 500 turn Calibra-tion Loop to the voltage inputs of DMM #2.

10. Set both DMMs to measure AC Volt.

11. With the CP500 removed from any signal and the locking lever returned to the LOCKED position, degauss the probe by pressing the DEGAUSS button (located on the coupling menu) twice.

12. Open the CP500 locking lever and position the probe input

DMM #2

Current Probe

Oscilloscope

DMM #1

500 TurnCurrent Loop

ProBus Extender

Function Generator



around the 500 turn loop. Close and LOCK the locking lever.

13. Adjust the Function generator voltage until the voltage mea-sured at the ’Current Sense’ terminals (DMM #2) reads 500 mV ± 0.05 mV. (This corresponds to 5 A at the probe head).

14. Record the voltage measured by DMM #2 on the Test Record.

15. Verify that the measured voltage is between 0.495 Volt and 0.505 Volt.

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CP500 Current Probe


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Specifications


6Specifications

NOMINAL CHARACTERISTICS

Nominal characteristics describe parameters and attributes which are guaranteed by design, but do not have associated tolerances.

Maximum Continuous Input 500 Amp rmsCurrent Refer to figure 6-1, Input current

vs. frequency.

Maximum Peak Input Current 700 Amp peak

Intended Output Load 1 MΩ

Maximum Permitted 600 V Cat II, 300 V Cat IIICircuit Voltage (Insulated conductor).

WARRANTED CHARACTERISTICS

Warranted characteristics describe parameters which have guaranteed performance. Unless otherwise noted, tests are provided in the Performance Verification Procedure for all warranted specifications.

Guaranteed at 23° C ± 3° C (73° F ± 5° F) after power has been applied for 30 minutes.

Low Frequency Accuracy0 to 500 Amp ± 1% of reading ± 500 mA500 to 700 Amp peak ± 2% of reading

TYPICAL CHARACTERISTICS

Typical characteristics describe parameters which do not have guaranteed performance, however are representative of the average performance from a sample of several probes. Tests for typical characteristics are not provided in the Performance Verification procedure.

Sensitivity* 200 mA/div* to 200 A/div

Scale factor Temperature ± 2% or less. (from 0° to +40° C,Coefficient 32° F to 104° F).

Noise Equivalent to 25 mA rms or less(Bandwidth of measuring instru-ment: 20 MHz).

CP500 Current Probe


Insertion Impedance Refer to figure 6-2.

Bandwidth (-3 dB) DC to 2 MHz

Rise Time ≤ 175 nsec.

* Lower sensitivity may change with different oscilloscope models.

ENVIRONMENTAL CHARACTERISTICS

Temperature:Operating 0 to 40 °C (32 °F to 104 °F) at

≤80% relative humidity.

Storage -10 °C to 50 °C (14° F to 122 °F) ≤80% relative humidity.

Usage Indoor

Altitude 2000 m (6562 feet).

Effect of External Magnetic Equivalent to a maximum of Field 800 mA (In a DC or 60 Hz, 400

A/m magnetic field).

PHYSICAL CHARACTERISTICS

Dimensions Probe:Length 176 mm (6.9 inch)Width 27 mm (1.1 inch)Height 69 mm (2.7 inch)

Dimensions Compensation Box:Length 65 mm (2.6 inch)Width 39 mm (1.5 inch)Height 24 mm (0.9 inch)

Weight 650 g (22.9 oz.)

Maximum conductor 20 mm (0.79 in)diameter

Cable length 6 m (19.6 feet)

Specifications


COMPLIANCES AND CERTIFICATIONS

CE Declaration of Conformity

The probe meets requirements of the EMC Directive 89/336/EEC for Electromagnetic Compatibility and Low Voltage Directive 73/23/EEC for Product Safety.

EMC Directive: EN 61326-1:1997+A1:1998EMC requirements for electrical equipment formeasurement, control and laboratory use.

Electromagnetic Emission:EN 55011:1998, Class B radiated emissions

Electromagnetic Immunity:EN 61000-3-2:1995+A1:1998+A2:1998*Electrostatic discharge (4 kV/8 kV contact/air)EN 61000-3-3:1995*RF Radiated Electromagnetic Field

(3 V/m)

*Meets Performance Criteria "B" limits at certain test levels, during the disturbance, prod-uct undergoes a temporary degradation or loss of function of performance which is selfrecoverable.

Low Voltage directive: EN 61010-1:1993+A2:1995Safety requirements for electrical equipment for measurement, control and laboratory use.Part 1: General requirementsPart 2-031: Particular requirements for hand-heldprobe assemblies for electrical measurement and testPart 2-032: Particular requirements for hand-held cur-rent clamps for electrical measurement and test

The probe has been qualified to the followingEN 61010-2-031: 1994EN 61010-2-032:1995Over-voltage Category II, III (anticipated transient over-voltage 4000 V) Pollution Degree 2.

CP500 Current Probe


Figure 6-1. Maximum Input Current vs. Frequency

Figure 6-2. Insertion Impedance vs. frequency

Frequency (Hz)

10 k 100 k 1 M1 k10010

400

500

300

200

0

100

Current(A rms)

10 k 100 k 1 MFrequency (Hz)

0.100

0.010

0.001

InsertionImpedance (ΩΩ)

Appendix A

CP500-OM-E Rev A ISSUED: November 2001 A-1

1Appendix A

PERFORMANCE VERIFICATION TEST RECORD

This record can be used to record the results of measurements made during the performance ver-ification of the CP500 Current Probe.

Photocopy this page and record the results on the copy. File the completed record as required by applicable internal quality procedures.

The section in the test record corresponds to the parameters tested in the performance verification procedure. The numbers preceding the individual data records correspond to the steps in the pro-cedure that require the recording of data. Results to be recorded in the column labeled "Test Result" are the actual specification limit check. The test limits are included in all of these steps. Other measurements and the results of intermediate calculations that support the limit check are to be recorded in the column labeled "Intermediate Results".

Permission is granted to reproduce these pages for the purpose of recording test results.

Model: CP500

Serial Number:

Asset or Tracking Number:

Date:

Technician:

EQUIPMENT USED:

1The function generator used in this Performance Verification Procedure is used for making relative measurements. The output of the generator is measured with a DMM or oscilloscope in this procedure. Thus, the generator is not required to be calibrated.

MODEL SERIAL NUMBER

CALIBRATION DUE DATE

Digital Multimeter

Digital Multimeter

Function Generator1 N/A

CP500 Current Probe

A-2 ISSUED: November 2001 CP500-OM-E Rev A

CP500 TEST RECORD

Step Description Test Result

Gain Accuracy

14 Probe Output (Spec Limit: 0.495 - 0.505V) ________________ V

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Instruction Manual LeCroy CP500 · Earth ground Probe is protected by reinforced or double insulation. CP500 Current Probe 1-2 ISSUED: November 2001 CP500-OM-E Rev A USAGE The probe

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